28B-1 Steel roller chain, sold per metre.
Typical specification:
Pitch P: 1 3/4"
Roller Diameter A: 27.94mm
Width between inner plates B: 30.99mm
Pin diameter C: 15.9mm
Pin Length D: 65.1mm
Link Pin Length E: 69.5mm
Inner plate height F: 36.7mm
Plate thickness g/G: 7.5/6.0
Minimum tensile strength: 200kN
Average tensile strength: 220kN